<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <div style="margin-top: 100px; width: 100%; height: 200px; float: left">
        <div  style="width: 20%; height: 100%; border: 1px solid red; float: left">广告1</div>
        <div  style="width: 20%; height: 100%; border: 1px solid red; float: left">广告2</div>
        <div  style="width: 20%; height: 100%; border: 1px solid red; float: left">广告3</div>
        <div  style="width: 20%; height: 100%; border: 1px solid red; float: left">广告4</div>
        <div  style="width: 20%; height: 100%; border: 1px solid red; float: left">广告5</div>
    </div>

    <a href="advertisement.html">1</a>
    <a href="advertisement2.html">2</a>
</body>
</html>